linux-kernel - Re: [syzbot] WARNING in io_wq_submit

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Message-ID: <659c1c9e-3df1-14f4-0630-88fd118f9e23@gmail.com>
Date:   Tue, 12 Oct 2021 11:42:35 +0100
From:   Pavel Begunkov <asml.silence@...il.com>
To:     syzbot <syzbot+bc2d90f602545761f287@...kaller.appspotmail.com>,
        axboe@...nel.dk, fgheet255t@...il.com, io-uring@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] WARNING in io_wq_submit_work (2)

On 10/11/21 21:32, syzbot wrote:
> syzbot suspects this issue was fixed by commit:
> 
> commit c57a91fb1ccfa203ba3e31e5a389cb04de5b0561
> Author: Pavel Begunkov <asml.silence@...il.com>
> Date:   Wed Sep 8 19:49:17 2021 +0000
> 
>      io_uring: fix missing mb() before waitqueue_active
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=143b46bf300000
> start commit:   926de8c4326c Merge tag 'acpi-5.15-rc1-3' of git://git.kern..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=37df9ef5660a8387
> dashboard link: https://syzkaller.appspot.com/bug?extid=bc2d90f602545761f287
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11e4357d300000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1173a663300000
> 
> If the result looks correct, please mark the issue as fixed by replying with:
> 
> #syz fix: io_uring: fix missing mb() before waitqueue_active

#syz fix: io-wq: fix cancellation on create-worker failure


-- 
Pavel Begunkov